Machinery for manufacturing liquid or semi-liquid food products

Abstract

To overcome drawbacks relating to the level of hygiene safety.SOLUTION: Described is a machine (1) for making liquid or semi-liquid food products, comprising: a first processing container (2) defining a processing chamber (2a), the first processing container (2) for processing a liquid or semi-liquid product; a stirrer (3) for mixing the product in the first processing container (2); a plurality of detection devices (4) adapted to detect a quantity or an operating parameter of the machine (1) and to generate a signal representative of the quantity or of the operating parameter; a processing and control unit (5) configured to receive the representative signals and to derive an operating condition of the machine (1) based on the signals; a user interface (6) connected to the processing and control unit (5) and comprising a single control (7) operable by an operator to selectively perform power on and power off of the machine (1).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a machine for processing liquid or semi - liquid foods such as, for example, handmade ice cream, soft cream, milkshakes, whipped cream, cream, chocolate, yogurt, and the like.

[0002] The present invention also relates to a method for operating a machine for manufacturing, storing and / or dispensing liquid or semi - liquid foods.

Background Art

[0003] There are prior - art machines that include at least one container for processing a liquid or semi - liquid product and a stirrer configured to mix the product within the container.

[0004] Typically, the processing container also comprises heat - treatment means configured to cool and / or heat the liquid or semi - liquid product so that the liquid or semi - liquid product can be dispensed out of the machine using a dispensing device.

[0005] As is known, the operating conditions of these machines are controlled by an operator using a push - button panel arranged on the machine frame.

[0006] In practice, during use, after the machine is activated, the operator changes the operating parameters (such as the speed of the stirrer or the processing temperature, etc.) by input on the push - button panel and, if necessary, performs visual control regarding the correct operation of some components.

[0007] Unfortunately, these machines have drawbacks related to the level of safety and hygiene.

[0008] To switch the machine on / off or to be able to adjust the machine, the operator has to use a push - button panel located near the machine. This creates a hygiene risk for both the operator and the liquid or semi - liquid product.

[0009] Push-button panels are typically used by multiple operators, making them a breeding ground for bacteria and contaminants. Furthermore, because push-button panels are located near the machine, operators need to be near the machine for extended periods to adjust its operation and, if necessary, ensure all components are functioning correctly. This can pose a risk to the food safety of liquid or semi-liquid products, especially for operators with health issues. [Overview of the Initiative]

[0010] Therefore, the technical objective of the present invention is to provide a machine for producing liquid or semi-liquid products, and a method for operating said machine, which can overcome the shortcomings of the prior art.

[0011] Therefore, an object of the present invention is to provide a machine for producing liquid or semi-liquid products, and a method for operating said machine, which minimizes contact between the machine and the operator in order to enhance food safety and hygiene standards.

[0012] The identified technical objectives and objectives are substantially achieved by a machine for producing liquid or semi-liquid food products, and by a method for operating such a machine, which includes technical features described in one or more of the claims of the appended patent claims. Dependent claims correspond to possible embodiments of the present invention.

[0013] More specifically, the technical objective is achieved by a machine for producing liquid or semi-liquid food products, comprising: a first container defining a processing chamber, the first container for processing a liquid or semi-liquid product; a stirrer for mixing the product in the first processing container; and a plurality of detection devices designed to measure the volume or operating parameters of the machine and generate signals representing the volume or operating parameters themselves. The machine also comprises, according to the present invention, a processing and control unit configured to receive the aforementioned representation signals and derive operating conditions of the machine based on said signals; and a user interface connected to the processing and control unit, the user interface including a single control unit that can be operated by an operator to selectively switch the machine on and off.

[0014] Preferably, the command can be selected from a mechanical push button, a virtual button, or preferably a touchscreen button.

[0015] Preferably, external functions other than on or off switching (i.e., different from such switching) are controlled by a remote control device. More preferably, all other operations other than on or off switching are controlled by a remote control device located outside the machine, which is configured to allow an operator to display a representation signal and transmit instructions to processing and control units about changes in the machine's operating conditions.

[0016] Advantageously, contact between the operator and the machine is limited to the time required to press the command to switch the machine on or off, thus minimizing the risk of food contamination.

[0017] Therefore, more specifically, the processing and control unit 5 is configured to receive commands related to other functions that use the remote control device, other than switching them on or off.

[0018] In this sense, the processing and control unit 5 is equipped with an interface (such as Wi-Fi, radio waves, Bluetooth®, or a cable) for receiving commands from the remote control device. In a preferred embodiment, the machine also includes a database containing identification data associated with the biometric profiles and / or voice patterns of one or more predetermined operators authorized to use the machine. The machine also includes an identification system integrated into the user interface, which is configured to capture an operator's identification data item and transmit the identification data item to the processing and control unit to confirm its presence in the database.

[0019] In this way, the machine can recognize whether the operator is authorized to use the machine, and if the operator is not authorized, it can prevent the machine from being switched on or off by a single control unit.

[0020] Preferably, the machine also includes detection means, such as a thermal camera, configured to measure at least one physical parameter of the operator, such as body temperature, and to allow or deny the operator access to the machine depending on the value of the measured parameter.

[0021] For example, if the operator's body temperature exceeds 37.5°C, the machine will prevent the operator from operating it via a single control unit that switches the machine on and off.

[0022] The detection means can be inserted into the machine instead of or in addition to the identification system. In this second case, the detection means functions as an additional control unit for the operator who can operate the machine. In practice, during use, the operator is first recognized by the identification system and identified as existing among the authorized operators in the database. If so, the operator undergoes measurement of their body parameters by the detection means. If the parameters meet the conditions (e.g., below or above a predetermined threshold), the operator has the right to switch the machine on or off. If the parameters do not meet the conditions, access is prohibited.

[0023] In the case of authorized access, the operator can switch the machine on / off, while each external function other than on / off switching is executed remotely, i.e., at a location away from the machine.

[0024] In other words, the machine has a single control unit designed to switch the machine on and off, i.e., a single control unit integrated into the machine. On the other hand, all other commands related to other functions can be controlled remotely.

[0025] Advantageously, this machine has a high level of hygiene and hygienic safety, so production can continue even in cases where a high level of hygienic safety is required, such as in a health emergency.

Brief Description of the Drawings

[0026] Further features and advantages of the present invention will become clearer in the following non-limiting description of embodiments of a machine for manufacturing liquid or semi-liquid foods and a method for operating the machine.

[0027] The specification will be described below with reference to the following attached drawings provided for illustrative purposes only without limiting the scope of the present invention. [Figure 1] It is a schematic diagram of a first embodiment of the machine according to the present invention. [Figure 2]Schematic diagram of a second embodiment of the machine according to the present invention. [Figure 3] Schematic diagram of a third embodiment of the machine according to the present invention. **Embodiments for Carrying out the Invention**

[0028] With respect to the accompanying drawings, the numeral 1 indicates a machine for manufacturing a liquid or semi - liquid food according to the present invention.

[0029] The term "liquid or semi - liquid product" is used to mean ice cream, pastries, and similar products (non - limiting examples include ice cream, soft - serve, granite, sherbet, shakes, yogurt, frozen desserts, cold cream).

[0030] These foods may be made from any basic mixture (liquid, semi - liquid, powdery), optionally with the addition of any kind of further liquid product (e.g., water) as necessary.

[0031] As shown in the accompanying drawings, the machine 1 includes a frame 1a having a substantially parallelepiped shape, and a first container 2 defining a processing chamber 2a therein, and the first container 2 for processing a liquid or semi - liquid product is arranged.

[0032] Preferably, the first processing container 2 is a mixing and cooling cylinder with a horizontal axis, and a liquid or semi - liquid product is introduced into the mixing and cooling cylinder for heat treatment and then distributed.

[0033] In an alternative embodiment shown in Figure 2, the semi - liquid product is first introduced into a further container 15 provided with a mixing element 15a.

[0034] The further container 15 is substantially used for pasteurizing the liquid or semi - liquid product, and the liquid or semi - liquid product is then transferred to the first processing container 2 via a duct 16 provided with a transfer pump 17.

[0035] Machine 1 also includes a stirrer 3 configured to mix the product in the first processing container 2.

[0036] Preferably, the agitator 3 is associated with a drive unit 3a configured to rotate the agitator 3 inside the processing container 2 to mix the food. The agitator 3 also has a scraper function, i.e., acts against the inner wall of the processing chamber 2 to remove layers of ice.

[0037] Preferably, the machine 1 also comprises a heat plant 13, the heat plant 13 comprising a heat exchanger 13a associated with the first processing vessel 2 to maintain the liquid or semi-liquid product at a temperature between -12°C and +5°C.

[0038] More preferably, the heat plant 13 also comprises an additional heat exchanger 13b, a compressor 13c, and a depressurizing element 13d.

[0039] Note that the heat exchanger 13a, the further heat exchanger 13b, the compressor 13c, and the pressure reducing element 13d define a circuit containing a heat carrier fluid.

[0040] As shown in the attached drawings, machine 1 also includes a dispenser 14 connected by a duct 14a to a first container 2 for processing liquid or semi-liquid products so that the product can be dispensed. The dispenser 14 is mounted on the outer wall of the frame 1a of machine 1 so that it can be easily operated when the product is being dispensed.

[0041] Preferably, the dispenser 14 can be operated by an operator via a lever connected to a shutter (not shown) to allow or deny the passage of product toward the outside of the machine 1 along the duct 14a. Alternatively, the dispenser 14 may be operated by an operator via voice commands, such that the shutter is controlled by the operator simply by using their voice.

[0042] Alternatively, the dispenser 14 may be replaced with a discharge hatch 40, as shown in Figure 3.

[0043] More generally, it should be noted that, apart from on / off switching, further control may be voice-based.

[0044] Advantageously, this latter embodiment allows for a further reduction in contact between the operator and machine 1.

[0045] As shown in the attached drawings, machine 1 also comprises a plurality of detection devices 4 designed to measure quantities or operating parameters of machine 1 and to generate signals that represent those quantities or operating parameters.

[0046] Preferably, these multiple detection devices 4 are formed in the form of sensors and are positioned near various components of the machine 1 to measure appropriate quantities or operating parameters, such as the temperature or density or composition of a product or the quantity and / or weight of a product.

[0047] In one embodiment, at least one of the detection devices 4 is configured to provide a signal representing the weight of the liquid or semi-liquid product in the first processing container 2. Thanks to the presence of the detection devices 4, the operator can know when the first processing container 2 is empty and therefore knows when it needs to be filled with other liquid or semi-liquid food.

[0048] According to one embodiment, at least one of the detection devices 4 is equipped with a pressure switch. In this case, the pressure switch detects a change in air pressure due to an increase in the volume of liquid and / or semi-liquid mixture in the processing container.

[0049] Advantageously, the presence of the detection device 4 eliminates the need for the operator to manually remove parts of the machine 1 at predetermined time intervals to control the height (level) of the product present in the first processing container 2.

[0050] Therefore, advantageously, the presence of the detection device 4 prevents direct contact between the operator and the food contained in the first container 2, as the operator only removes the first processing container 2 when the food has been consumed and thus the first processing container 2 is empty.

[0051] The presence of a detection device 4 configured to provide a signal representing weight is particularly advantageous when the machine 1 has multiple processing containers 2, each containing a different (powdered, liquid, or semi-liquid) base product, such as bag-in-box type processing containers or flexible pockets or rigid containers. In this situation, for each processing container 2 there is a corresponding detection device 4, which allows the operator to understand which liquid or semi-liquid product flavor is nearing or finished, and to replace / fill only that processing container 2 without having to periodically check each of the processing containers 2.

[0052] In a preferred embodiment, at least one of the detection devices 4 is also configured to provide a signal representing the characteristic composition of a liquid or semi-liquid product contained in the first processing container 2. The detection device 4 works in conjunction with a memory module 12 containing identification data for a plurality of liquid or semi-liquid foods and characteristic compositions corresponding to the identification data to recognize the liquid or semi-liquid product by comparing the detected characteristic composition with the identification data present in the memory module 12.

[0053] In other words, machine 1 can recognize the type of food present in the first processing container 2 by comparing the signal coming from the detection device 4 with a database of data related to various compositions and, therefore, various products present in the memory module 12.

[0054] Machine 1 may also include one or more of the following: a height measuring device 4 (not shown) designed to measure the height of the product in the first container 2; a flow measuring device 4 (not shown) designed to measure the flow rate of the basic mixture introduced into / extracted from the first container 2; a pressure measuring device 4 designed to measure the pressure of the product in the processing container 2 and / or the pressure of the heat carrier fluid supplied by the compressor 13c; and one or more devices for detecting the temperature of any component of the machine or the product being processed.

[0055] The expression signal generated by the detection device 4 is received by a processing and control unit 5 within the machine 1, which is configured to derive the operating conditions of the machine 1 based on the signal.

[0056] For example, thanks to the signal obtained from the detection device 4 regarding the composition of a liquid or semi-liquid product, the processing and control unit 5 recognizes the type of product contained in the first processing container 2 and derives appropriate operating conditions for the machine 1 for that product.

[0057] In other words, in light of the signal obtained from the detection device 4, the processing and control unit 5 can establish operating parameters suitable for processing the liquid product, such as the rotation speed of the agitator 3, the temperature inside the first processing container 2, and the processing time.

[0058] Advantageously, thanks to the cooperation between the detection device 4 and the processing and control unit 5, the machine 1 can automatically set, or rather, automatically define, appropriate operating conditions according to the type of liquid or semi-liquid product, without requiring operator intervention.

[0059] To minimize and ensure safe contact between the operator and the machine 1, the machine 1 includes a user interface 6 connected to a processing and control unit 5, the user interface 6 having a single control unit (not multiple commands as in conventional machines) for starting / stopping processing cycles.

[0060] Preferably, as shown in the attached drawings, the user interface 6 is positioned on the outer wall of the frame 1a of the machine 1 so that it can be easily accessed by the operator.

[0061] According to the present invention, the user interface 6 comprises a single control unit 7 that can be operated by an operator to selectively switch the machine 1 on and off.

[0062] It should also be noted that the single control unit 7 can also be used to stop the machine in an emergency while the machine is in operation.

[0063] Preferably, the single control unit 7 can be selected from the following: a mechanical push button, a virtual button, preferably a touchscreen button, or a voice recognition type command.

[0064] Advantageously, the presence of a single control unit 7 minimizes contact time between the operator and the machine 1, as this time is reduced to simply the activation time of the single control unit 7 (only the on / off switching time).

[0065] In a preferred embodiment, the user interface 6 also has an identification system 9, that is, an integrated identification system 9, which is configured to acquire operator identification data and transmit said identification data to the processing and control unit 5.

[0066] Database 8, which includes identification data related to biometric profiles and / or voice patterns, and / or data related to the facial features of one or more predetermined operators authorized to use machine 1, is stored in the processing and control unit 5.

[0067] Identification data from identification system 9 is compared with data already present in database 8 to check for its presence in database 8.

[0068] In other words, the identification system 9 detects a specific identifier of the operator, such as a fingerprint, retinal pattern, or voice pattern, and compares this data with data stored in a database 8 that contains identification data related to the biometric profiles and / or voice patterns of one or more predetermined operators authorized to use the machine 1.

[0069] When machine 1 is switched on or off, the operator is positioned near the user interface 6 so that the identification system 9 can detect the operator's specific identifier. If the identification data matches the data contained in database 8, the operator is recognized as authorized to operate machine 1 and can therefore activate a single control unit 7 to selectively switch machine 1 on and off.

[0070] Therefore, the machine's control unit is configured to perform the operations described above.

[0071] On the other hand, if the identification data is not present in the database 8, the machine 1 will fail to start the single control unit 7, and therefore the operator will not be able to switch the machine 1 on or off. In this situation, the user interface 6 may generate an error signal, for example, in the form of a visual message if the interface 6 has a small display, or it may generate an error signal in the form of an audible message.

[0072] Advantageously, the presence of the identification system 9 contributes to improving the hygienic safety of machine 1, as only designated operators can operate it.

[0073] In place of, or in addition to, the identification system 9, the machine 1 includes detection means 10 configured to measure at least one physical parameter of the operator and to allow or deny the operator access to the machine 1 depending on the value of the measured parameter.

[0074] Preferably, the detection means 10 can be selected (not limited to) from, for example, the following: a pressure measuring device, a temperature measuring device, and / or a blood saturation measuring device, while the physical parameter to be measured can be selected from, for example, body temperature, blood pressure, and blood oxygen level.

[0075] Advantageously, the detection means 10 functions as a control unit to ensure that the operator is suitable for selectively operating the machine 1 to switch it on or off by a single control unit 7.

[0076] In a preferred embodiment, machine 1 includes both an identification system 10 and a detection means 9 to perform dual control over the operator's suitability for switching machine 1 on or off.

[0077] In this situation, the operator positions themselves near the user interface 6 so that the identification system 9 can detect the user identification parameter and compare it to one present in the database 8. If the parameter is not present, the operator is not suitable to operate machine 1, thus hindering the function of the single control unit 7 for switching it on and off.

[0078] On the other hand, if an identification parameter exists in the database 8, the detection means 10 is activated to measure at least one physical parameter of the operator. If the parameter satisfies the condition, the operator can operate a single control unit 7 to switch the machine 1 on or off. On the other hand, if the parameter does not satisfy the condition, the machine 1 prevents switching on or off and generates an error signal if necessary.

[0079] Advantageously, the cooperation between the identification system 9 and the detection means 10 makes the machine 1 hygienically safe, because only selected and deemed healthy users can operate the machine 1.

[0080] As already mentioned, all functions other than switching on or off are controlled remotely to minimize the time of interaction between the operator and the machine.

[0081] Preferably, remote control is performed using an external remote control device (not shown) of machine 1, which is configured to allow an operator to display representation signals coming from detection device 4 and transmit commands to processing and control unit 5 for changes in the operating conditions of machine 1.

[0082] Preferably, the exchange of data related to the representation signal between the processing and control unit 5 and the remote control device is performed thanks to the receiving and transmitting module 11 installed in machine 1.

[0083] In other words, the receiving and transmitting module 11 is configured to enable data exchange between the remote control device and the processing and control unit 5, so that an operator can intervene to change the operating conditions of machine 1, which is automatically processed by the processing and control unit 5.

[0084] Preferably, the remote control device can be selected from a tablet, smartphone, or dedicated controller.

[0085] Preferably, if a tablet or smartphone is used, the operator displays the signals coming from the detection device 4 and, if necessary, modifies the operating conditions of machine 1 by using a specially created application.

[0086] In other words, thanks to the possibility of signal exchange between the processing and control unit 5 and the detection device 4, when the machine 1 is switched on by the operator, it can automatically set and establish predetermined operating conditions based on these signals. If it is necessary to change these operating conditions, the operator can remotely operate the machine 1 using a remote control device and change the necessary parameters.

[0087] In all cases, please note that users should not only use the push buttons on the machine for adjustments, but also use external interfaces (such as mobile phones, tablets, or PCs) as needed.

[0088] Advantageously, the possibility of remotely controlling any function of machine 1 other than switching it on or off means that machine 1 can be used even in critical medical situations, such as during an infectious disease outbreak.

[0089] In a preferred embodiment, machine 1 also includes a timer (not shown) configured to initiate an operation for cleaning machine 1.

[0090] Preferably, in practice, the machine 1 is equipped with an automatic cleaning system (not shown) that can autonomously perform cleaning operations so that the operator does not need to disassemble the machine 1 and therefore does not need to come into contact with the machine 1 or its components.

[0091] Preferably, the timer is programmable using a remote control device.

[0092] In other words, by using a remote control device, the timer may be programmed to activate the cleaning system and perform cleaning of machine 1, mainly of the processing container 2 and the duct 14a connecting container 2 to dispenser 14, whenever necessary.

[0093] Advantageously, the presence of a programmable timer helps to facilitate cleaning of machine 1 while maintaining a high level of food safety throughout the entire machine.

[0094] This invention achieves the predetermined objective of eliminating the shortcomings of the prior art.

[0095] More specifically, machine 1 is hygienically safe because it can be switched on or off by a single control unit 7 that can be operated by an operator who is recognized as healthy and suitable for operating machine 1.

[0096] Machine 1 is also hygienically safe because all functions other than switching it on or off, which requires greater interaction with the machine, are controlled remotely.

Claims

1. A machine (1) for manufacturing liquid or semi-liquid food products, A first processing container (2) that defines a processing chamber (2a), the first processing container (2) for processing liquid or semi-liquid products, A stirrer (3) for mixing the liquid or semi-liquid product in the first processing container (2), A plurality of detection devices (4) adapted to detect the quantity or operating parameters of the machine (1) and generate a signal representing the quantity or operating parameters, A processing and control unit (5) is configured to receive the aforementioned signal and derive the operating conditions of the machine (1) based on the signal, A user interface (6) connected to the processing and control unit (5), comprising a single control unit (7) operable by an operator to selectively turn the machine (1) on and off, the user interface (6) being installed as part of the machine (1), The processing and control unit (5) is equipped with an interface configured to receive commands from a remote control device for any function other than power on or power off. The machine (1) is further equipped with an external remote control device, the remote control device being configured to enable the operator to display the signal to be expressed and to transmit commands to the processing and control unit (5) to change the operating conditions of the machine (1), The remote management device can be selected from a tablet, smartphone, or dedicated controller. A machine (1) comprising detection means (10) configured to measure at least one physical parameter of an operator and to permit or deny the operator access to the machine (1) depending on the value of the detected physical parameter.

2. The machine (1) according to claim 1, wherein the single control unit (7) can be selected from a mechanical push button and a virtual button.

3. The machine (1) according to claim 2, wherein the virtual button is a touchscreen button.

4. A database (8) containing user identification data relating to a biometric profile and / or the voiceprint of one or more specific operators authorized to use the machine (1), the database (8) stored in the processing and control unit (5), The machine (1) according to any one of claims 1 to 3, further comprising: an identification system (9) integrated into the user interface (6) and configured to capture an operator identification data item, and to transmit the identification data item to the processing and control unit (5) to confirm the presence of the identification data item in the database (8).

5. The machine (1) according to any one of claims 1 to 4, wherein the at least one physical parameter is body temperature.

6. The machine (1) according to any one of claims 1 to 5, further comprising a data receiving and transmitting module (11) configured to enable data exchange between the remote management device and the processing and control unit (5).

7. The machine (1) according to any one of claims 1 to 6, comprising a timer configured to initiate a cleaning operation for the machine (1), wherein the timer is programmable from the remote control device.

8. The machine (1) according to any one of claims 1 to 7, wherein at least one of the plurality of detection devices (4) is configured to provide a signal representing the weight of the liquid or semi-liquid product in the first processing container (2).

9. The machine (1) according to any one of claims 1 to 8, wherein at least one of the plurality of detection devices (4) is configured to provide a signal representing the characteristic composition of the liquid or semi-liquid product in the first processing container (2).

10. The machine (1) according to claim 9, comprising a memory module (12) including identification data for a plurality of liquid or semi-liquid foods and characteristic compositions corresponding to the identification data, wherein the memory module (12) is configured to work in conjunction with at least one of the plurality of detection devices (4) to recognize the liquid or semi-liquid product by comparing the characteristic composition with the identification data.

11. The machine (1) according to any one of claims 1 to 10, comprising a thermal system (13) including a heat exchanger (13a) associated with the first processing vessel (2).

12. The machine (1) according to any one of claims 1 to 11, comprising a dispenser (14) connected to the first processing container (2) for processing the liquid or semi-liquid product, and enabling extraction of the liquid or semi-liquid product therefrom.

13. A method for operating the machine (1) according to any one of claims 1 to 12, A step of turning on or off the power to the machine (1) using a single control unit (7) that can be operated by an operator, wherein the single control unit (7) is included in a user interface (6) located on the machine (1) and connected to the processing and control unit (5) of the machine (1), A method comprising the step of using a remote control device to control all functions of the machine (1) other than turning the power of the machine (1) on or off.

14. The method according to claim 13, wherein the remote control device is a remote management device.

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